Rounding Functions

Function

Rounding functions.

Syntax

real ceil(real x);
real floor(real x);
real frac(real x);
real round(real x);
real trunc(real x);

Returns

ceil returns the smallest integer not less than x.
floor returns the largest integer not greater than x.
frac returns the fractional part of x.
round returns x rounded to the nearest integer.
trunc returns the integer part of x.

real x = 2.567;
printf("The rounded value of %f is %f\n", x, round(x));